fixup! X Draft support for date modifier

due:=XXX was not properly taken into account in e.g. `due:<=1m` filter.

topydo/commands/PostponeCommand.py

@@ -43,6 +43,7 @@ class PostponeCommand(MultiCommand):
 
     def _execute_multi_specific(self):
         def _get_offset(p_todo):
+            # FIXME handle due modifiers
             offset = p_todo.tag_value(
                 config().tag_due(), date.today().isoformat())
 
@@ -75,7 +76,7 @@ class PostponeCommand(MultiCommand):
                     self.error("Warning: todo item has no (valid) start date, therefore it was not adjusted.")
 
                 # pylint: disable=E1103
-                todo.set_tag(config().tag_due(), new_due.isoformat())
+                todo.set_tag(config().tag_due(), new_due.isoformat())   # FIXME preserve due flags
 
                 self.todolist.dirty = True
                 self.out(self.printer.print_todo(todo))

topydo/lib/Filter.py

@@ -283,7 +283,16 @@ class OrdinalTagFilter(OrdinalFilter):
             return resort_to_grep_filter()
 
         try:
-            operand1 = date_string_to_date(p_todo.tag_value(self.key))
+            # due: and t: can have modifiers
+            if self.key == 'due':
+                _ = p_todo.due_date()
+            elif self.key == 't':
+                _ = p_todo.start_date()
+            else:
+                _ = date_string_to_date(p_todo.tag_value(self.key))
+            if _ is None:
+                raise ValueError
+            operand1 = _
             operand2 = relative_date_to_date(self.value)
 
             if not operand2:

topydo/lib/Recurrence.py

@@ -62,6 +62,7 @@ def advance_recurring_todo(p_todo, p_offset=None, p_strict=False):
         raise NoRecurrenceException()
 
     # pylint: disable=E1103
+    # FIXME preserve due modifiers
     todo.set_tag(config().tag_due(), new_due.isoformat())
 
     if todo.start_date():